Grate



(No Model.)

'Y W. su J, o. SWINDBLL.

GRATB.

No. 469,070. Patented Feb. 16,1892.-

NVEN @if m J Att'y.

UNITED STATES PATENT OFFICE.

IVILLIAM SWINDELL AND JOHNO. SVINDELL, OF ALLEGHENY, PENNSYLVANIA.

GRATE.

SPECIFICATION forming part of Letters atent No. 469,070, dated February 16, 1892.

Application filed September 10, 1891. SerialNo. 405.297. (No model.) v

To all whom t may concern:

Be it known that We, VILLIAM SWINDELL and JOHN C. SWINDELL, citizens of the United States, residing at Allegheny,in the county of Allegheny and State of Pennsylvania, have invented or discovered certain new and useful Improvements in Grates, of which improvements the following is a specification.

The invention described herein relates to certain improvements in grates for furnaces, and has for its object a construction and arrangement of bars whereby the clinker and ashes may be easily removed without disturbing the superincumbent fuel; and in general terms the invention consists in the construction and combination, substantially as hereinafter described and claimed.

In the accompanying drawings, forming a part of this speciication, Figure 1 is a plan view of a grate formed of my improved bars. Figs. 2 and 3 are sectional elevations, the planes of section being indicated by the lines and y y, respectively, of Fig. 1. Fig. 4 is a sectional view on the line z z, Fig. 1, the grate-bars being shown in different operative positions; and Fig. 5 is an end elevation showing the stops in the positions corresponding to those of the grate-bars in Fig. 4.

In the practice of our invention plates 1 and 2, provided along their inner edges with suitable bearings for the journals of the gratebars, are supported on the front and rear walls of the furnace, and the journals 6 and 7 of the grate-bars 3 and 4 are placed inV position in the bearings in the plates 1 and 2. A capplate 5 is then placed over the front plate 1, said plate extending out over the front journals 6 of the grate-bars, thereby protecting said journals and providing a stop-plate for limiting the oscillation of the grate-bars, as hereinafter described.

Each grate-bar 3 consists of a reticulated body portion preferably formed by a central web or plate a, two side Webs or plates b, parallel with the central web, and a series of transverse webs c, integral with the lon gitudinal Webs'and forming in connection therewith a series of open-ended pockets foi` the passage of air and ashes to and from the superincumbent bed of fuel.

Each grate-bar 4 consists of a series of tri wir w Figs. l and 2, or an independent collar may be placed between the disks. In order to hold the disks together on the shaft and at the same time permit of their lateral expansion when heated, a spring-washer 12 is placed between two of the disks or between the end disk and the supporting-plate 1, as shown in Fig. 1.

The grate-bars 3 and 4, constructed as described, are arranged alternately in the furnace, as shown in Figs. 1 and 4, and on the journals 6 and 7, outside of the supportingplate l, are fixed the indicating and limiting plates 13 and 14, ywhich serve not only to indicate the positions of the bars 3 and 4, but.,

also to prevent by contact with the cap-plate` 5 a too large movement or oscillation of the i bars. When in normal position, the bars 3 have their fiat faces uppermost and the bars 4 have one of the edges d of the disks uppermost, as shown in Figs. 1 and 4. The plates 13 are so constructed and attached to the journals of the bars 3 that the latter may be oscillated in either direction through an are of ninety degrees (more or less) from their normal position, thereby shifting the supportingfaces of the bars into a vertical plane, or approximately so. After the bar or bars 3 have been so turned the bars 4 are similarly oscillated, thereby causing one of the apices of the disks 9 to traverse the faceof the adjacent bar 3, so as to remove any adherent cinder or clinker, while another-of the apices Will pass through the under portion of the fire, thereby freeing it from ashes. In shifting the bars 4 one of the supporting-edges d is turned down while the other edge is brought into operative position, and hence While it is necessary to return the bars 3 to normal position-4. e., With their faces uppermost-the bars 4 need not be shifted until it again becomes necessary to clean the tire. The oscillation of the bars may IOO ber effected by a suitable Wrench fitting the outer angular ends of the journals 6 or by any other suitable means. By removing the eapplate 5 any one or all of the grate-bars may be removed and new ones inserted, the superinoumbent fuel being temporarily supported by rods forced in above the grate in the manner well known in the art.

Ve claim herein as our invention* 1. In a grate for furnaces, the combination of a series of oscillating bars having an open or retioulated body portion and a series of oscillating bars alternating with the other bars and consisting of a series of triangularlyshaped disks, substantially asset forth.

2. In a grate for furnaces, the combination of a series of oscillating bars having an open or retioulated body portion, a series of oseillating bars alternating therewith and consisting of a series of triangularly-shaped disks, and indicating-plates on t-he journals of the bars, substantially as set forth.

In testimony whereof we have hereunto Set our hands.

WILLIAM SVINDELL. JOHYN C. SVVINDELL.

Witnesses:

DARWIN S. WoLoorr, R. H. WHITTLESEY. 

